diff --git a/ChangeLog b/ChangeLog
index 6f7a3303a4..5a51c72272 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Tue Mar 10 02:40:11 2015  SHIBATA Hiroshi  <shibata.hiroshi@gmail.com>
+
+	* thread.c: Improve documentation for Thread#value
+	  [Bug #10694][ruby-core:67324][ci skip]
+
 Tue Mar 10 02:37:55 2015  SHIBATA Hiroshi  <shibata.hiroshi@gmail.com>
 
 	* string.c: [DOC] Add missing documentation around String#chomp.
diff --git a/thread.c b/thread.c
index b24d29e087..605ac60c08 100644
--- a/thread.c
+++ b/thread.c
@@ -916,10 +916,14 @@ thread_join_m(int argc, VALUE *argv, VALUE self)
  *  call-seq:
  *     thr.value   -> obj
  *
- *  Waits for +thr+ to complete, using #join, and returns its value.
+ *  Waits for +thr+ to complete, using #join, and returns its value or raises
+ *  the exception which terminated the thread.
  *
  *     a = Thread.new { 2 + 2 }
  *     a.value   #=> 4
+ *
+ *     b = Thread.new { raise 'something went wrong' }
+ *     b.value   #=> RuntimeError: something went wrong
  */
 
 static VALUE
diff --git a/version.h b/version.h
index 1eae730035..2798b80d5d 100644
--- a/version.h
+++ b/version.h
@@ -1,6 +1,6 @@
 #define RUBY_VERSION "2.1.5"
 #define RUBY_RELEASE_DATE "2015-03-10"
-#define RUBY_PATCHLEVEL 311
+#define RUBY_PATCHLEVEL 312
 
 #define RUBY_RELEASE_YEAR 2015
 #define RUBY_RELEASE_MONTH 3